4-Pin Heated Oxygen Sensor (Ho2S), Replacing

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Use the faulty sensor as a guide for installing all of the accompanying attachments, cable ties or marking bands.

Do not repair the heated oxygen sensor wires. Repairing may result in malfunctions.

-- Remove the faulty oxygen sensor.

-- Lay both of the oxygen sensor next to each other so the sensor housings are the same level.

Fig 1: Identifying Both Oxygen Sensors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tie the excess length of the sensor (approximately 50 to 250 mm) back so it is the same length as the faulty sensor and secure it with cable ties -1-.

Fig 2: Identifying Excess Length Of Sensor Tied To Same Length As Faulty Sensor

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Check if the oxygen sensor connector housing is compatible with the vehicle electrical system side.

-- If necessary, replace the vehicle electrical system connector with the provided oxygen sensor connector housing. Refer to CONTACT HOUSINGS AND CONNECTORS, REPAIRING .

NOTE:

Only replace the connector housing on older vehicles. The connector housing is correct on new vehicles.

Check the pin assignment. The pins in the new connector housing are color coded.

The packaging for the new heated oxygen sensor contains additional information.

-- Install the new oxygen sensor in the vehicle.